A-1 Portable Buildings LLC

A‑1 Portable Buildings follows a build‑to‑spec process that lets customers choose from a wide array of structural and finish options, ensuring each portable building matches the intended use and aesthetic. From the factory floor in Farmington, MO — 22855 Bloom Rd, Farmington, MO 63640, United States — the company assembles mini and lofted barns using pressure‑treated runners and floor joists, steel trusses, and 7/16‑in. OSB sheathing for walls and roofs. Exterior finishes include vinyl siding with 14 color choices, 50‑year LP SmartSide painted siding, or pressure‑treated wood with a five‑year weather‑proofing sealer; roof options range from a 40‑year WeatherX metal system to a limited‑lifetime shingle roof. Interior features such as ¾‑in. LP ProStruct tongue‑and‑groove flooring or treated plywood flooring for garages are standard, as are double 36‑in. doors, optional 4‑ft single doors, and gable vents.

The lofted barn model provides a raised storage area and comes standard with double doors, two windows, and a loft, while the mini barn is sized for garden‑tool storage and includes a single 48‑in. door in the 8‑ft width or a double 36‑in. door in the 10‑ft width. Optional accessories such as ramps, shelving, and loft doors allow owners to tailor the building for equipment, seasonal items, or livestock. All 12‑ft and 16‑